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Home >> Infiniti >> 2011 >> M37 Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 297 (Engine Control System - DTCS P0460 Through P1220) >> DTC P0550: PSP Sensor >> DTC Logic >> DTC Detection Logic
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DTC Detection Logic

WARNING: This page is about a different car, the 2011 Infiniti QX56. However, it is still accessible from the selected car via links, so may be relevant.
DTC DETECTION LOGIC

DTC No. Trouble diagnosis name (Trouble diagnosis content) DTC detecting condition Possible cause
P0550 PW ST P SEN/CIRC (Power steering pressure sensor circuit) An excessively low or high voltage from the sensor is sent to ECM.
  • Harness or connectors

    (The Fuel rail pressure sensor circuit is open or shorted.)

    (The Power steering pressure sensor circuit is open or shorted)

    (The Electrically-controlled cooling fan coupling circuit is open or shorted)

  • Fuel rail pressure sensor
  • Power steering pressure sensor
  • Electrically-controlled cooling fan coupling